113 lines
4.2 KiB
HTML
113 lines
4.2 KiB
HTML
<HTML>
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<HEAD>
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<STYLE type="text/css">
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H1 {color: black }
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H2 {color: maroon }
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H3 {color: #007090 }
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A.head:link {color: #0060a0 }
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A.head:visited {color: #3040c0 }
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A.head:active {color: white }
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A.head:hover {color: yellow }
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A.red:link {color: red }
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A.red:visited {color: maroon }
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A.red:active {color: yellow }
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</STYLE>
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</HEAD>
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<TITLE>Magic-8.3 Command Reference</TITLE>
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<BODY BACKGROUND=graphics/blpaper.gif>
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<H1> <IMG SRC=graphics/magic_title8_3.png ALT="Magic VLSI Layout Tool Version 8.3">
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<IMG SRC=graphics/magic_OGL_sm.gif ALIGN="top" ALT="*"> </H1>
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<H2>see</H2>
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<HR>
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Change what layers are displayed in the window
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<HR>
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<H3>Shortcuts:</H3>
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<BLOCKQUOTE>
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Mouse buttons 1 and 3 pressed in the GUI window toolbar implement the
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<B>see</B> and <B>see no</B> commands for the layer represented by
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the toolbar button.
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</BLOCKQUOTE>
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<H3>Usage:</H3>
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<BLOCKQUOTE>
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<B>see</B> [<B>no</B>] <I>layers</I>|<B>allSame</B> <BR><BR>
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<BLOCKQUOTE>
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where <I>layers</I> is a comma-separated list of layers
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in the technology, and may also be the character <B>*</B>
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indicating all layers but not labels, <B>$</B> indicating
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all layers under the cursor not including labels and
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subcells, <B>labels</B> indicating only labels,
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<B>error</B> indicating DRC error paint, <B>subcell</B>
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indicating subcells, and <B>connect</B> indicating all
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types connected to the type or types preceding it.
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</BLOCKQUOTE>
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</BLOCKQUOTE>
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<H3>Summary:</H3>
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<BLOCKQUOTE>
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The <B>see</B> command allows various layers in the layout
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to be made visible, including labels and error paint.
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With the keyword <B>no</B>, the command causes these layers
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to be made invisible on the display. <P>
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The keyword <B>allSame</B> is a special use and indicates that
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non-edit cells should be drawn in the same manner as the edit
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cell, rather than being drawn in the "pale" styles. <P>
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The keyword <B>connect</B> is only meaningful when it comes
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after one or more listed types. It will expand the list of
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types to include types electrically connected to those types.
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<P>
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The special keyword <B>$</B> is only meaningful when used with
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option "<B>see no</B>", as it refers to all layers visible
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directly under the pointer cursor, and it is not possible to
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query invisible layers. <P>
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Starting with Magic version 7.5, contacts whose residue layers
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(layers surrounding the cut) are partially visible and partially
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invisible will show the visible residue when the contact type
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itself is invisible. That way, the command "<B>see no * ; see m1</B>",
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for example, will show all metal1 including that under contacts,
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preventing the display of gaps in the metal1 layer where contacts
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are present. Note that this applies <I>only</I> to contacts, where
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the residue layers are declared in the techfile and therefore
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known <I>a priori</I>. Other layers, such as metal1 resistor
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(often appears as "rmetal1" in techfiles), have no relation to
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metal1 that can be definitively determined from the techfile.
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Therefore, to see all layers corresponding to a single production
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mask layer, it is necessary to explicitly call out all such layers
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int the <I>layers</I> list. <P>
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Undisplayed layers generally do not respond to commands such
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as <B>erase</B> or <B>select</B>. However, network selection
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will select across invisible layers, and copying or moving
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such a network selection will alter the invisible layers as
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well as the visible.
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</BLOCKQUOTE>
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<H3>Implementation Notes:</H3>
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<BLOCKQUOTE>
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<B>see</B> is implemented as a built-in command in <B>magic</B>.
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</BLOCKQUOTE>
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<H3>Bugs:</H3>
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<BLOCKQUOTE>
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It should be enforced everywhere in the code that invisible
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layers cannot be altered. This may require removing invisible
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layers from a selection after doing a network connectivity
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search.
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</BLOCKQUOTE>
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<P><IMG SRC=graphics/line1.gif><P>
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<TABLE BORDER=0>
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<TR>
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<TD> <A HREF=commands.html>Return to command index</A>
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</TR>
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</TABLE>
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<P><I>Last updated:</I> March 7, 2020 at 1:06pm <P>
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</BODY>
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</HTML>
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